I'm trying to use tab and slot between planar ribs and a curved sheet, see below. Whenever I try to pick the curved edge of the rib, I get "Invalid selection, please select a tab edge which is shared by a planar or cylindrical edge". The curved edge is cylindrical (sketched with an arc), so I should be able to use that edge, right? (One of the cool enhancement in 2019 was tab and slot on curved surfaces)

Anyone have any help with this?

SW 2019, SP0